Dansyl chloride reacts with primary amino groups in both aliphatic and aromatic amines to produce stable blue- or blue-green-fluorescent sulfonamide adducts. It is widely used to modify amino acids, specifically, protein sequencing and amino acid analysis.

Neohesperidin dihydrochalcone(NHDC) is an artificial sweetener derived from citrus.

Chiniofon, a halogenated 8-hydroxyquinoline, is used as an antiamebic drug. This type of anti-amebic drug exerts an anti-amebic effect by inhibiting intestinal commensal bacteria and affects amoebic dysentery, but has no effect on extra-intestinal amoebic parasites.